import machine
import time


#pin = machine.Pin(23,machine.Pin.OUT)
#pin.value(1)
#time.sleep(2)
#pin.value(0)
#time.sleep(1)

pwm= machine.PWM(machine.Pin(23))
pwm.freq(1000)
pwm.duty(int(800))#空心板点击转动起始
time.sleep_ms(1000*3)
pwm.duty(0)
time.sleep(1)



    
